499 lines
19 KiB
Python
499 lines
19 KiB
Python
import signal
|
|
import sys
|
|
import unittest
|
|
import warnings
|
|
from unittest import mock
|
|
|
|
import asyncio
|
|
from asyncio import base_subprocess
|
|
from asyncio import subprocess
|
|
from asyncio import test_utils
|
|
try:
|
|
from test import support
|
|
except ImportError:
|
|
from asyncio import test_support as support
|
|
if sys.platform != 'win32':
|
|
from asyncio import unix_events
|
|
|
|
# Program blocking
|
|
PROGRAM_BLOCKED = [sys.executable, '-c', 'import time; time.sleep(3600)']
|
|
|
|
# Program copying input to output
|
|
PROGRAM_CAT = [
|
|
sys.executable, '-c',
|
|
';'.join(('import sys',
|
|
'data = sys.stdin.buffer.read()',
|
|
'sys.stdout.buffer.write(data)'))]
|
|
|
|
class TestSubprocessTransport(base_subprocess.BaseSubprocessTransport):
|
|
def _start(self, *args, **kwargs):
|
|
self._proc = mock.Mock()
|
|
self._proc.stdin = None
|
|
self._proc.stdout = None
|
|
self._proc.stderr = None
|
|
|
|
|
|
class SubprocessTransportTests(test_utils.TestCase):
|
|
def setUp(self):
|
|
self.loop = self.new_test_loop()
|
|
self.set_event_loop(self.loop)
|
|
|
|
|
|
def create_transport(self, waiter=None):
|
|
protocol = mock.Mock()
|
|
protocol.connection_made._is_coroutine = False
|
|
protocol.process_exited._is_coroutine = False
|
|
transport = TestSubprocessTransport(
|
|
self.loop, protocol, ['test'], False,
|
|
None, None, None, 0, waiter=waiter)
|
|
return (transport, protocol)
|
|
|
|
def test_proc_exited(self):
|
|
waiter = asyncio.Future(loop=self.loop)
|
|
transport, protocol = self.create_transport(waiter)
|
|
transport._process_exited(6)
|
|
self.loop.run_until_complete(waiter)
|
|
|
|
self.assertEqual(transport.get_returncode(), 6)
|
|
|
|
self.assertTrue(protocol.connection_made.called)
|
|
self.assertTrue(protocol.process_exited.called)
|
|
self.assertTrue(protocol.connection_lost.called)
|
|
self.assertEqual(protocol.connection_lost.call_args[0], (None,))
|
|
|
|
self.assertFalse(transport.is_closing())
|
|
self.assertIsNone(transport._loop)
|
|
self.assertIsNone(transport._proc)
|
|
self.assertIsNone(transport._protocol)
|
|
|
|
# methods must raise ProcessLookupError if the process exited
|
|
self.assertRaises(ProcessLookupError,
|
|
transport.send_signal, signal.SIGTERM)
|
|
self.assertRaises(ProcessLookupError, transport.terminate)
|
|
self.assertRaises(ProcessLookupError, transport.kill)
|
|
|
|
transport.close()
|
|
|
|
|
|
class SubprocessMixin:
|
|
|
|
def test_stdin_stdout(self):
|
|
args = PROGRAM_CAT
|
|
|
|
@asyncio.coroutine
|
|
def run(data):
|
|
proc = yield from asyncio.create_subprocess_exec(
|
|
*args,
|
|
stdin=subprocess.PIPE,
|
|
stdout=subprocess.PIPE,
|
|
loop=self.loop)
|
|
|
|
# feed data
|
|
proc.stdin.write(data)
|
|
yield from proc.stdin.drain()
|
|
proc.stdin.close()
|
|
|
|
# get output and exitcode
|
|
data = yield from proc.stdout.read()
|
|
exitcode = yield from proc.wait()
|
|
return (exitcode, data)
|
|
|
|
task = run(b'some data')
|
|
task = asyncio.wait_for(task, 60.0, loop=self.loop)
|
|
exitcode, stdout = self.loop.run_until_complete(task)
|
|
self.assertEqual(exitcode, 0)
|
|
self.assertEqual(stdout, b'some data')
|
|
|
|
def test_communicate(self):
|
|
args = PROGRAM_CAT
|
|
|
|
@asyncio.coroutine
|
|
def run(data):
|
|
proc = yield from asyncio.create_subprocess_exec(
|
|
*args,
|
|
stdin=subprocess.PIPE,
|
|
stdout=subprocess.PIPE,
|
|
loop=self.loop)
|
|
stdout, stderr = yield from proc.communicate(data)
|
|
return proc.returncode, stdout
|
|
|
|
task = run(b'some data')
|
|
task = asyncio.wait_for(task, 60.0, loop=self.loop)
|
|
exitcode, stdout = self.loop.run_until_complete(task)
|
|
self.assertEqual(exitcode, 0)
|
|
self.assertEqual(stdout, b'some data')
|
|
|
|
def test_shell(self):
|
|
create = asyncio.create_subprocess_shell('exit 7',
|
|
loop=self.loop)
|
|
proc = self.loop.run_until_complete(create)
|
|
exitcode = self.loop.run_until_complete(proc.wait())
|
|
self.assertEqual(exitcode, 7)
|
|
|
|
def test_start_new_session(self):
|
|
# start the new process in a new session
|
|
create = asyncio.create_subprocess_shell('exit 8',
|
|
start_new_session=True,
|
|
loop=self.loop)
|
|
proc = self.loop.run_until_complete(create)
|
|
exitcode = self.loop.run_until_complete(proc.wait())
|
|
self.assertEqual(exitcode, 8)
|
|
|
|
def test_kill(self):
|
|
args = PROGRAM_BLOCKED
|
|
create = asyncio.create_subprocess_exec(*args, loop=self.loop)
|
|
proc = self.loop.run_until_complete(create)
|
|
proc.kill()
|
|
returncode = self.loop.run_until_complete(proc.wait())
|
|
if sys.platform == 'win32':
|
|
self.assertIsInstance(returncode, int)
|
|
# expect 1 but sometimes get 0
|
|
else:
|
|
self.assertEqual(-signal.SIGKILL, returncode)
|
|
|
|
def test_terminate(self):
|
|
args = PROGRAM_BLOCKED
|
|
create = asyncio.create_subprocess_exec(*args, loop=self.loop)
|
|
proc = self.loop.run_until_complete(create)
|
|
proc.terminate()
|
|
returncode = self.loop.run_until_complete(proc.wait())
|
|
if sys.platform == 'win32':
|
|
self.assertIsInstance(returncode, int)
|
|
# expect 1 but sometimes get 0
|
|
else:
|
|
self.assertEqual(-signal.SIGTERM, returncode)
|
|
|
|
@unittest.skipIf(sys.platform == 'win32', "Don't have SIGHUP")
|
|
def test_send_signal(self):
|
|
code = 'import time; print("sleeping", flush=True); time.sleep(3600)'
|
|
args = [sys.executable, '-c', code]
|
|
create = asyncio.create_subprocess_exec(*args,
|
|
stdout=subprocess.PIPE,
|
|
loop=self.loop)
|
|
proc = self.loop.run_until_complete(create)
|
|
|
|
@asyncio.coroutine
|
|
def send_signal(proc):
|
|
# basic synchronization to wait until the program is sleeping
|
|
line = yield from proc.stdout.readline()
|
|
self.assertEqual(line, b'sleeping\n')
|
|
|
|
proc.send_signal(signal.SIGHUP)
|
|
returncode = (yield from proc.wait())
|
|
return returncode
|
|
|
|
returncode = self.loop.run_until_complete(send_signal(proc))
|
|
self.assertEqual(-signal.SIGHUP, returncode)
|
|
|
|
def prepare_broken_pipe_test(self):
|
|
# buffer large enough to feed the whole pipe buffer
|
|
large_data = b'x' * support.PIPE_MAX_SIZE
|
|
|
|
# the program ends before the stdin can be feeded
|
|
create = asyncio.create_subprocess_exec(
|
|
sys.executable, '-c', 'pass',
|
|
stdin=subprocess.PIPE,
|
|
loop=self.loop)
|
|
proc = self.loop.run_until_complete(create)
|
|
return (proc, large_data)
|
|
|
|
def test_stdin_broken_pipe(self):
|
|
proc, large_data = self.prepare_broken_pipe_test()
|
|
|
|
@asyncio.coroutine
|
|
def write_stdin(proc, data):
|
|
proc.stdin.write(data)
|
|
yield from proc.stdin.drain()
|
|
|
|
coro = write_stdin(proc, large_data)
|
|
# drain() must raise BrokenPipeError or ConnectionResetError
|
|
with test_utils.disable_logger():
|
|
self.assertRaises((BrokenPipeError, ConnectionResetError),
|
|
self.loop.run_until_complete, coro)
|
|
self.loop.run_until_complete(proc.wait())
|
|
|
|
def test_communicate_ignore_broken_pipe(self):
|
|
proc, large_data = self.prepare_broken_pipe_test()
|
|
|
|
# communicate() must ignore BrokenPipeError when feeding stdin
|
|
with test_utils.disable_logger():
|
|
self.loop.run_until_complete(proc.communicate(large_data))
|
|
self.loop.run_until_complete(proc.wait())
|
|
|
|
def test_pause_reading(self):
|
|
limit = 10
|
|
size = (limit * 2 + 1)
|
|
|
|
@asyncio.coroutine
|
|
def test_pause_reading():
|
|
code = '\n'.join((
|
|
'import sys',
|
|
'sys.stdout.write("x" * %s)' % size,
|
|
'sys.stdout.flush()',
|
|
))
|
|
|
|
connect_read_pipe = self.loop.connect_read_pipe
|
|
|
|
@asyncio.coroutine
|
|
def connect_read_pipe_mock(*args, **kw):
|
|
transport, protocol = yield from connect_read_pipe(*args, **kw)
|
|
transport.pause_reading = mock.Mock()
|
|
transport.resume_reading = mock.Mock()
|
|
return (transport, protocol)
|
|
|
|
self.loop.connect_read_pipe = connect_read_pipe_mock
|
|
|
|
proc = yield from asyncio.create_subprocess_exec(
|
|
sys.executable, '-c', code,
|
|
stdin=asyncio.subprocess.PIPE,
|
|
stdout=asyncio.subprocess.PIPE,
|
|
limit=limit,
|
|
loop=self.loop)
|
|
stdout_transport = proc._transport.get_pipe_transport(1)
|
|
|
|
stdout, stderr = yield from proc.communicate()
|
|
|
|
# The child process produced more than limit bytes of output,
|
|
# the stream reader transport should pause the protocol to not
|
|
# allocate too much memory.
|
|
return (stdout, stdout_transport)
|
|
|
|
# Issue #22685: Ensure that the stream reader pauses the protocol
|
|
# when the child process produces too much data
|
|
stdout, transport = self.loop.run_until_complete(test_pause_reading())
|
|
|
|
self.assertEqual(stdout, b'x' * size)
|
|
self.assertTrue(transport.pause_reading.called)
|
|
self.assertTrue(transport.resume_reading.called)
|
|
|
|
def test_stdin_not_inheritable(self):
|
|
# asyncio issue #209: stdin must not be inheritable, otherwise
|
|
# the Process.communicate() hangs
|
|
@asyncio.coroutine
|
|
def len_message(message):
|
|
code = 'import sys; data = sys.stdin.read(); print(len(data))'
|
|
proc = yield from asyncio.create_subprocess_exec(
|
|
sys.executable, '-c', code,
|
|
stdin=asyncio.subprocess.PIPE,
|
|
stdout=asyncio.subprocess.PIPE,
|
|
stderr=asyncio.subprocess.PIPE,
|
|
close_fds=False,
|
|
loop=self.loop)
|
|
stdout, stderr = yield from proc.communicate(message)
|
|
exitcode = yield from proc.wait()
|
|
return (stdout, exitcode)
|
|
|
|
output, exitcode = self.loop.run_until_complete(len_message(b'abc'))
|
|
self.assertEqual(output.rstrip(), b'3')
|
|
self.assertEqual(exitcode, 0)
|
|
|
|
def test_empty_input(self):
|
|
@asyncio.coroutine
|
|
def empty_input():
|
|
code = 'import sys; data = sys.stdin.read(); print(len(data))'
|
|
proc = yield from asyncio.create_subprocess_exec(
|
|
sys.executable, '-c', code,
|
|
stdin=asyncio.subprocess.PIPE,
|
|
stdout=asyncio.subprocess.PIPE,
|
|
stderr=asyncio.subprocess.PIPE,
|
|
close_fds=False,
|
|
loop=self.loop)
|
|
stdout, stderr = yield from proc.communicate(b'')
|
|
exitcode = yield from proc.wait()
|
|
return (stdout, exitcode)
|
|
|
|
output, exitcode = self.loop.run_until_complete(empty_input())
|
|
self.assertEqual(output.rstrip(), b'0')
|
|
self.assertEqual(exitcode, 0)
|
|
|
|
def test_cancel_process_wait(self):
|
|
# Issue #23140: cancel Process.wait()
|
|
|
|
@asyncio.coroutine
|
|
def cancel_wait():
|
|
proc = yield from asyncio.create_subprocess_exec(
|
|
*PROGRAM_BLOCKED,
|
|
loop=self.loop)
|
|
|
|
# Create an internal future waiting on the process exit
|
|
task = self.loop.create_task(proc.wait())
|
|
self.loop.call_soon(task.cancel)
|
|
try:
|
|
yield from task
|
|
except asyncio.CancelledError:
|
|
pass
|
|
|
|
# Cancel the future
|
|
task.cancel()
|
|
|
|
# Kill the process and wait until it is done
|
|
proc.kill()
|
|
yield from proc.wait()
|
|
|
|
self.loop.run_until_complete(cancel_wait())
|
|
|
|
def test_cancel_make_subprocess_transport_exec(self):
|
|
@asyncio.coroutine
|
|
def cancel_make_transport():
|
|
coro = asyncio.create_subprocess_exec(*PROGRAM_BLOCKED,
|
|
loop=self.loop)
|
|
task = self.loop.create_task(coro)
|
|
|
|
self.loop.call_soon(task.cancel)
|
|
try:
|
|
yield from task
|
|
except asyncio.CancelledError:
|
|
pass
|
|
|
|
# ignore the log:
|
|
# "Exception during subprocess creation, kill the subprocess"
|
|
with test_utils.disable_logger():
|
|
self.loop.run_until_complete(cancel_make_transport())
|
|
|
|
def test_cancel_post_init(self):
|
|
@asyncio.coroutine
|
|
def cancel_make_transport():
|
|
coro = self.loop.subprocess_exec(asyncio.SubprocessProtocol,
|
|
*PROGRAM_BLOCKED)
|
|
task = self.loop.create_task(coro)
|
|
|
|
self.loop.call_soon(task.cancel)
|
|
try:
|
|
yield from task
|
|
except asyncio.CancelledError:
|
|
pass
|
|
|
|
# ignore the log:
|
|
# "Exception during subprocess creation, kill the subprocess"
|
|
with test_utils.disable_logger():
|
|
self.loop.run_until_complete(cancel_make_transport())
|
|
test_utils.run_briefly(self.loop)
|
|
|
|
def test_close_kill_running(self):
|
|
@asyncio.coroutine
|
|
def kill_running():
|
|
create = self.loop.subprocess_exec(asyncio.SubprocessProtocol,
|
|
*PROGRAM_BLOCKED)
|
|
transport, protocol = yield from create
|
|
|
|
kill_called = False
|
|
def kill():
|
|
nonlocal kill_called
|
|
kill_called = True
|
|
orig_kill()
|
|
|
|
proc = transport.get_extra_info('subprocess')
|
|
orig_kill = proc.kill
|
|
proc.kill = kill
|
|
returncode = transport.get_returncode()
|
|
transport.close()
|
|
yield from transport._wait()
|
|
return (returncode, kill_called)
|
|
|
|
# Ignore "Close running child process: kill ..." log
|
|
with test_utils.disable_logger():
|
|
returncode, killed = self.loop.run_until_complete(kill_running())
|
|
self.assertIsNone(returncode)
|
|
|
|
# transport.close() must kill the process if it is still running
|
|
self.assertTrue(killed)
|
|
test_utils.run_briefly(self.loop)
|
|
|
|
def test_close_dont_kill_finished(self):
|
|
@asyncio.coroutine
|
|
def kill_running():
|
|
create = self.loop.subprocess_exec(asyncio.SubprocessProtocol,
|
|
*PROGRAM_BLOCKED)
|
|
transport, protocol = yield from create
|
|
proc = transport.get_extra_info('subprocess')
|
|
|
|
# kill the process (but asyncio is not notified immediately)
|
|
proc.kill()
|
|
proc.wait()
|
|
|
|
proc.kill = mock.Mock()
|
|
proc_returncode = proc.poll()
|
|
transport_returncode = transport.get_returncode()
|
|
transport.close()
|
|
return (proc_returncode, transport_returncode, proc.kill.called)
|
|
|
|
# Ignore "Unknown child process pid ..." log of SafeChildWatcher,
|
|
# emitted because the test already consumes the exit status:
|
|
# proc.wait()
|
|
with test_utils.disable_logger():
|
|
result = self.loop.run_until_complete(kill_running())
|
|
test_utils.run_briefly(self.loop)
|
|
|
|
proc_returncode, transport_return_code, killed = result
|
|
|
|
self.assertIsNotNone(proc_returncode)
|
|
self.assertIsNone(transport_return_code)
|
|
|
|
# transport.close() must not kill the process if it finished, even if
|
|
# the transport was not notified yet
|
|
self.assertFalse(killed)
|
|
|
|
# Unlike SafeChildWatcher, FastChildWatcher does not pop the
|
|
# callbacks if waitpid() is called elsewhere. Let's clear them
|
|
# manually to avoid a warning when the watcher is detached.
|
|
if sys.platform != 'win32' and \
|
|
isinstance(self, SubprocessFastWatcherTests):
|
|
asyncio.get_child_watcher()._callbacks.clear()
|
|
|
|
def test_popen_error(self):
|
|
# Issue #24763: check that the subprocess transport is closed
|
|
# when BaseSubprocessTransport fails
|
|
if sys.platform == 'win32':
|
|
target = 'asyncio.windows_utils.Popen'
|
|
else:
|
|
target = 'subprocess.Popen'
|
|
with mock.patch(target) as popen:
|
|
exc = ZeroDivisionError
|
|
popen.side_effect = exc
|
|
|
|
create = asyncio.create_subprocess_exec(sys.executable, '-c',
|
|
'pass', loop=self.loop)
|
|
with warnings.catch_warnings(record=True) as warns:
|
|
with self.assertRaises(exc):
|
|
self.loop.run_until_complete(create)
|
|
self.assertEqual(warns, [])
|
|
|
|
|
|
if sys.platform != 'win32':
|
|
# Unix
|
|
class SubprocessWatcherMixin(SubprocessMixin):
|
|
|
|
Watcher = None
|
|
|
|
def setUp(self):
|
|
policy = asyncio.get_event_loop_policy()
|
|
self.loop = policy.new_event_loop()
|
|
self.set_event_loop(self.loop)
|
|
|
|
watcher = self.Watcher()
|
|
watcher.attach_loop(self.loop)
|
|
policy.set_child_watcher(watcher)
|
|
self.addCleanup(policy.set_child_watcher, None)
|
|
|
|
class SubprocessSafeWatcherTests(SubprocessWatcherMixin,
|
|
test_utils.TestCase):
|
|
|
|
Watcher = unix_events.SafeChildWatcher
|
|
|
|
class SubprocessFastWatcherTests(SubprocessWatcherMixin,
|
|
test_utils.TestCase):
|
|
|
|
Watcher = unix_events.FastChildWatcher
|
|
|
|
else:
|
|
# Windows
|
|
class SubprocessProactorTests(SubprocessMixin, test_utils.TestCase):
|
|
|
|
def setUp(self):
|
|
self.loop = asyncio.ProactorEventLoop()
|
|
self.set_event_loop(self.loop)
|
|
|
|
|
|
if __name__ == '__main__':
|
|
unittest.main()
|